[TechAssist] Re: Proscan PS36625 CTC 197CG
- From: Philip Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 18 Aug 2003 15:38:25 -0400
Mine was a PTK195AP Projo.
U17701 was the "UHF/VHF/Mixer/Osc" flat pack IC part# 227007.
Phil Bader
Paul wrote:
>
> Hi Phil, I had a reply from Wayne Vanaman that you may have read. In it he
> said that he has replaced the pll ic in the tuner for this symptom. It is a
> flat pack U17501 P/N 231529. Is this possibly be the same IC you are
> referring to, only with a different location number. Would you happen to have
> the P/N for the IC you changed? Paul
> Philip Bader <tjanphyl@xxxxxxxxxxxxxxx> wrote:We had a 197 PTV do this and
> the surface mounted IC in the tuner area,
> under the shiels shorted, causing a 12V run short. Lifting the Vcc pin
> allowed it to power on (without tuning).
> U17701 ( uhf-vhf-mixer-osc) pin 8 is Vcc.
> Phil Bader
>
> Paul wrote:
> >
> > This is definitely not my day. This set clicks 4 times and will not start.
> > Have changed the IHVT and the cap and resistor that came with it. Have
> > changed the HOP xstr. re-soldered L1401 and the driver xmr. Has a couple of
> > resistors that have gotten pretty warm. Can't tell for sure there
> > value.They are R14159 1w,and R14110 2w. Neither one is open. Was wondering
> > about the blue square caps next to the IHVT.Monitoring the collector of the
> > HOP xstr has 154V seems a little high. Pulse amplitude only a brief
> > flicker. Paul
> >
> > Paul ,B Central TV&Video Grover Beach Ca.
> >
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> --
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
> For Professional Technicians Only
>
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> Paul ,B
> Central TV&Video
>
> Grover Beach Ca.
>
> *****************************************************************************
> Classifieds! Buy or Sell!
> http://sell.tech-assist.org
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--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
For Professional Technicians Only
*****************************************************************************
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http://sell.tech-assist.org
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